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參數(shù)資料
| 型號： | AN1218 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 英文描述： | HC05 to HC08 Optimization |
| 中文描述： | 以HC08的優(yōu)化HC05 |
| 文件頁數(shù)： | 2/56頁 |
| 文件大?。?/td> | 417K |
| 代理商： | AN1218 |
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Application Note
AN1218 Rev. 2
2
This application note will help inform and educate the reader concerning
the differences between the HC05 and HC08 CPUs. Detailed examples
illustrating the added features found with the CPU08 are given to help
optimize software design with the CPU08.
Scope of this Application Note
This note assumes the reader has a background in MCU software and
hardware design and is also familiar with the HC05. It was written for the
engineering manager and the design engineer. As a reference, the
application note overviews the basic differences between the two CPUs
so that one can fit the right CPU for a specific application. As a tutorial,
the application note gives the designer the means to understand and
utilize the HC08 enhancements. Software is given to illustrate and
compare the performance of the CPUs.
HC08 Features
The following is a list of major features of the HC08 CPU (CPU08) that
differentiate it from the HC05 CPU (CPU05).
Fully upward object code compatible with the MC6805,
MC146805, and the MC68HC05 Family
64 KByte program/data memory space
Enhanced HC05 programming model
8 MHz CPU bus frequency
16 addressing modes, 5 more than the HC05
Expandable internal bus definition for addressing range extension
beyond 64 KBytes
16-bit index register with manipulation instructions
16-bit stack pointer with manipulation instructions
Memory to memory data moves without using the accumulator
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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